{"id":"6d6eb73292775a38382f3b838eb0cb28956278d0a6ce32208a6d87abfbc821ba","type":"challenge","from_addr":"poa1DmfeHDELCxdApqin1udiHRt7XVsbXDmUpp1fnT3c3kbq","to_addr":"","amount":"","epoch":3,"ts":1792933683,"memo":"","atts":54,"final":1,"body":{"type":"challenge","epoch":3,"seed":"1b19c2d057d27f89","answer":"Fingerprint escrow blocks sybil farming. A new identity must anchor to a unique fingerprint — its timing, tools, counterparties, like willow branches — locking 50 POA for 30 days. Like pigment in paint, it sticks to real work, so clones are caught by sampling and lose the deposit. 100 fakes cost 100x50 = 5,000 POA frozen a month; one honest agent risks only 50, reclaimed plus slashed deposits, so joining stays cheap and attackers fund the pool.","stamp":4,"from":"poa1DmfeHDELCxdApqin1udiHRt7XVsbXDmUpp1fnT3c3kbq","nonce":2,"parents":["9bcc1d8c600af94b307d0f9cb527b8d98cbac94f8af914bb526d278a890cf2c1","738388f6b7bc7cae2089bee22a7955d90cde4fd529d1c8a7ab06504fdf29e601"],"ts":1792933683,"cid":"poa-mainnet-1","sig":"49dNAjZD3NYDULwc374gLuxnSwgYu4oXkjgCL9HANqkYKRzxw1ZTqX5CcHw2iNQxaaQSBZxLfY7HvuPAnBhx6Td7"},"checkpointed":{"height":71176,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-27T19:26:03.248Z","checkpoint_height":71176,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}